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A construction method for dismantling the interlayer lining of high-speed railway tunnels in operation

A construction method and interlayer technology, applied in the construction field of dismantling the interlayer lining of high-speed railway tunnels, can solve problems such as hindering the development of regional economy, increasing the burden on surrounding lines, and hidden dangers of high-speed railway safety, so as to protect the strength of rock mass, ensure safety, and ensure Operational Security Effects

Active Publication Date: 2021-05-18
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the construction of high-speed railway tunnels, interlayer linings may be formed due to positioning errors of adjacent lining formwork. The interlayer linings in the tunnels will cause great safety hazards for high-speed railways during the operation period.
The existing solution is that the traffic operation and management department closes the tunnel, adopts measures to interrupt traffic and carry out tunnel construction, which affects the travel of citizens, increases the burden on surrounding lines, and hinders the development of the regional economy.

Method used

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  • A construction method for dismantling the interlayer lining of high-speed railway tunnels in operation
  • A construction method for dismantling the interlayer lining of high-speed railway tunnels in operation
  • A construction method for dismantling the interlayer lining of high-speed railway tunnels in operation

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Embodiment 1

[0037] see Figure 1 to Figure 4 , the invention provides a construction method for dismantling the interlayer lining of a high-speed rail tunnel in operation, which comprises the following steps in turn:

[0038] (S1): Determine the removal area of ​​the interlayer lining and erect a temporary protective frame under the interlayer lining to be removed; isolate the high-speed rail traffic passage and the reserved space for construction, and remove the interlayer lining without affecting the existing traffic operation . The temporary protective frame includes a steel frame, a protective plate arranged on the steel frame, and pulleys arranged at both ends of the steel frame, and the temporary protective frame should avoid the position of the circumferential slit when erected. The present invention adopts the movable temporary protective frame to isolate the traffic passage and the reserved space for construction. After the removal of the interlayer lining in one stage is comple...

Embodiment 2

[0046] The construction method for dismantling the interlayer lining of the high-speed railway tunnel in operation in this embodiment is basically the same as that of Embodiment 1, the difference is that in the step (S2), when the thickness of the interlayer lining is relatively large, it needs to be cut in stages, which includes the following steps in turn:

[0047] (s1): Use a cutting machine to cut and form two circumferential or longitudinal slits on the surface of the interlayer lining, and then chisel away the concrete between the two slits to form a cutting groove. The distance between the two slits is greater than the width of the cutting tool and the margin is not less than 2cm to ensure that the cutting machine has operating space in the groove formed by chiseling.

[0048] (s2): Use a cutting machine to perform a second cut in the cutting groove until the depth of the cut is the same as the thickness of the interlayer lining. The present invention adopts the step-by-s...

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Abstract

The invention discloses a construction method for dismantling the interlayer lining of an operating high-speed railway tunnel, belonging to the field of tunnel lining construction, comprising the following steps: determining the dismantling area of ​​the interlayer lining and erecting a temporary protective frame under the interlayer lining to be removed; Multiple sets of circumferential slits are applied to the interlayer lining in the circumferential direction, and multiple sets of longitudinal slits are applied to the interlayer lining along the longitudinal direction of the tunnel; After the interlayer lining is completed, the lining surface of the newly exposed part of the tunnel is cleaned, and the temporary protective frame is fixed on the newly exposed part of the lining; the repair layer is sprayed on the damaged part of the newly exposed tunnel lining, and then the temporary protective frame is removed. The invention can remove the interlayer lining without affecting the existing traffic operation, and at the same time avoid the occurrence of slag on the lining surface and affect the high-speed rail transportation, ensuring the operation safety after the "skylight" ends.

Description

technical field [0001] The invention relates to the field of tunnel lining construction, in particular to a construction method for removing the interlayer lining of an operating high-speed railway tunnel. Background technique [0002] With the continuous and rapid development of my country's economy, my country's high-speed rail transportation volume has increased dramatically. However, during the construction of high-speed railway tunnels, interlayer linings may be formed due to positioning errors of adjacent lining formworks. The interlayer linings in tunnels will cause great safety hazards for high-speed railways during the operation period. The existing solution is that the traffic operation and management department closes the tunnel and adopts measures to interrupt traffic and carry out tunnel construction, which will affect the travel of citizens, increase the burden on surrounding lines, and hinder the development of the regional economy. Therefore urgently need to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D11/12
CPCE21D11/003E21D11/12
Inventor 王立川龚伦王士杰樊永杰谭文新吴剑朱月胜杨光华谢晓龙刘志强孙雪菲
Owner SOUTHWEST JIAOTONG UNIV